HP LaserJet 4345 Multifunction Printer series - Manual (Page 211)

b. Place your forefingers on the blue levers on the bottom of each side of the fuser.
Place your thumbs on the grip points on the top of each side of the fuser. Squeeze
the blue levers up, and remove the fuser from the MFP.
10. Open the black cover at the top of the fuser, and remove the jammed media.
11. Reinstall the fuser. Push on the fuser with your thumbs to be sure it snaps securely into
place.
12. To reinstall the fuser-entrance guide, first insert the right-side mounting pin into the hole
on the right side, and then lower the left-side mounting pin into the hole on the left side.
13. Reinstall the duplexer or the duplex cover.
ENWW Clearing jams 197